NATURAL See also:

• GAS

GAS  , the name given to the inflammable See also:

• GAS

gas occur-See also:

• RING (O.E. hring; a word common to Teutonic languages; and probably cognate with the Lat. circus, Gr. KtpKOS or KpLKOS, Skt'. chakra, wheel, circle, cf. also " harangue "); in art, a band of circular shape of varying sizes, made of any material and used f

ring in petroliferous formations . It consists mainly of hydro-carbons of the See also:

• PARAFFIN

paraffin See also:

• SERIES (a Latin word from serere, to join)

series, principally See also:

• MARSH (O. F. mersc, for merisc, a place full of "meres" or pools; cf. Ger. Meer, sea, Lat. mare)
• MARSH, ADAM (ADAM DE MARISCO) (d. c. 1258)
• MARSH, GEORGE PERKINS (1801-1882)
• MARSH, HERBERT (1757–1839)
• MARSH, NARCISSUS (1638-1713)
• MARSH, OTHNIEL CHARLES (1831-1899)

marsh gas, which constitutes from 5o to 90 % of the Pennsylvanian gas . Members of the See also:

• OLEFINE

olefine series are also See also:

• PRESENT

present, especially in the gas of See also:

• BAKU

Baku . Varying amounts of See also:

• CARBON (symbol C, atomic weight 12)

carbon dioxide, sometimes as much as ro% or more, and small quantities of carbon monoxide, See also:

• NITROGEN [symbol N., atomic weight 14.01, 0=16]

nitrogen, See also:

• HYDROGEN [symbol H, atomic weight x-oo8 (0=16)]

hydrogen and See also:

• OXYGEN (symbol 0, atomic weight 16)

oxygen are also found . For particulars of the See also:

• GEOLOGICAL

geological occurrence, and the collection and See also:

• DISTRIBUTION (Lat. distribuere, to deal out)

distribution, of natural gas, see See also:

• PETROLEUM (Lat. Petra, rock, and oleuin, oil)

PETROLEUM .